sustainer

In candle-making, a little disk, usually of tin-plate or plaster of Paris, which serves to support in an upright position the wick of a night-light, and prevents its falling over when the light has nearly burned out.

One who or that which sustains.

A sufferer.

In entomology, same as sustentor.

One who, or that which, sustains.

One who sustains.

someone who upholds or maintains